Due to hardware and firmware changes on the newer Sensor pod 120, Botzware prior to 2.6.x is unable to properly detect the sensor pod. Since the older firmware will not detect the pod, there is no way other than upgrading the Botzware to even view the sensor pod's firmware revision.

Resolution:

In any issue where a new sensor pod is not detected properly, the newest Botzware should be applied to the Netbotz 420/500.